Estimating Quotients

Front

What is estimation in division?

Back

Estimation in division is the process of finding an approximate value of a quotient by rounding the numbers to make calculations easier.

Front

What does it mean for numbers to be 'friendly' for estimation?

Back

'Friendly' numbers are those that are easy to work with, often rounded to the nearest ten, hundred, or other convenient value.

Front

How do you round 7200 to make it friendly for estimation?

Back

7200 can be rounded to 7200 or 7000, but for division by 80, it is best to use 7200.

Front

What is the friendly number to divide 5800 by for easier estimation?

Back

5800 is best divided by 60, as it is a friendly number.

Front

What is the result of estimating 2700 ÷ 30?

Back

2700 ÷ 30 is estimated to be 90.

Front

Why is 680 ÷ 10 a better choice for estimation than 680 ÷ 9?

Back

680 ÷ 10 is easier to calculate and gives a friendly number of 68.

Front

What is the friendly number to use when estimating 4000 ÷ 21?

Back

4000 ÷ 20 is the friendly estimation for easier calculation.

Front

How do you determine the best friendly number for estimation?

Back

Look for numbers that are multiples of ten or other round numbers that simplify calculations.

Front

What is the estimated quotient of 5400 ÷ 60?

Back

The estimated quotient is 90.

Front

What is the importance of using friendly numbers in estimation?

Back

Using friendly numbers makes mental math easier and quicker, allowing for faster problem-solving.